FIREPROOF PORTABLE POWER SUPPLY
The flame-retardant portable power supply addresses safety risks by using a metal housing for heat dissipation and an aerosol extinguishing device to prevent and extinguish fires, enhancing safety and waterproofing in portable power supplies.
Patent Information
- Application Number
- FR2023011131
- Authority / Receiving Office
- FR · FR
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2022-11-30
- Filing Date
- 2023-10-16
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-10-16
AI Technical Summary
Conventional portable power supplies face safety risks due to fire hazards from overheating batteries, poor fire extinguishing capabilities, and inadequate waterproofing, posing threats to industrial equipment and user safety.
A flame-retardant portable power supply with a metal housing and integrated aerosol extinguishing device that separates the battery pack from electrical assemblies, uses thermal conductivity for heat dissipation, and deploys an aerosol extinguishing mechanism when temperature thresholds are reached to prevent fires.
The solution provides effective fire prevention and rapid extinguishing without fans, ensuring waterproofing and safety, while maintaining compact size and ease of installation.
Smart Images
Figure 00000011_0000 
Figure 00000012_0000 
Figure 00000013_0000
Abstract
Description
Title of the invention: FIREPROOF PORTABLE POWER SUPPLY TECHNICAL DOMAIN
[0001] This utility certificate relates to the field of energy storage power supply, more specifically, a flame-retardant portable power supply. STATE OF THE ART
[0002] Electricity is an essential part of production at industrial sites, and in special circumstances, without power supply, many operations would stop. The conventional way to ensure power supply is to use generators, but generators themselves are bulky and inconvenient to carry, so there are portable mobile power supplies. During the discharge or charging process, the battery pack is prone to heat up, especially when the circuit is short-circuited, and when the heat is too great, the battery pack easily burns out, which damages the power supply and also threatens the safety of the surrounding industrial equipment, causing a great safety risk to the user.
[0003] Existing mobile portable power supplies are generally configured with a single housing cavity, and the heat dissipation by the fan, the fan cooling is bound to lack of waterproof performance, because the air inlet or outlet can not be sealed; and when the internal combustion of the battery releases a large amount of heat combustion, the fan can not make the open fire extinguished, there is still a great safety risk, and because the battery pack and electrical assemblies put in the same holding cavity, so once the battery is on fire, it is easy to make the electrical assemblies also rapid combustion. CONTENT OF THE INVENTION
[0004] This utility certificate discloses a flame-retardant portable power supply with a simple structure and convenient operation, aiming to improve the existing portable power supply with poor fire prevention effect and difficulty in quickly extinguishing the fire when the power supply burns inside.
[0005] This utility certificate adopts the following solution:
[0006] This utility certificate provides a flame retardant portable power supply comprising a battery pack and an electrical assembly, further comprising a metal housing and an aerosol extinguishing device, said metal housing being formed with a holding cavity suitable for mounting the battery pack and the assembly electrical, said battery pack being separate from said electrical assembly; said battery pack being electrically connected to said electrical assembly and being in contact with said metal housing; said holding cavity being provided with the aerosol extinguishing device, said aerosol extinguishing device being configured to release an aerosol into said holding cavity when the temperature in said holding cavity reaches a specified value.
[0007] This utility certificate provides a closed metal case for waterproofing battery packs, while the battery pack and said metal case are in contact, via the metal case, to transfer heat from the battery pack to the outside, this solution can achieve heat dissipation without using cooling fans, and at the same time, in said battery pack, the holding cavity is also provided with an aerosol extinguishing device, said aerosol extinguishing device can be released when the temperature in said holding cavity reaches a specified value, so as to achieve the effect of a flame retardant.
[0008] Preferably, said metal housing is formed of a first holding cavity and a second holding cavity; said battery pack is provided in said first holding cavity and is connected in contact with said metal housing, said electrical assembly is installed in said second holding cavity; said aerosol extinguishing device is provided inside said first holding cavity, and is configured to release an aerosol into said holding cavity when the temperature in said holding cavity reaches a specified value.
[0009] Preferably, said metal housing comprises a partition, the outer periphery of said partition extending on both sides in opposite directions to form a peripheral wall of the first holding cavity and the second holding cavity, said peripheral wall allowing heat transfer from said first holding cavity and said second holding cavity to the outside air, in order to reduce the temperature caused by the heat generated by the battery assemblies or the electrical assemblies.
[0010] Preferably, a plurality of damping posts suitable for mounting an upper housing are provided in a row at said peripheral wall in said second holding cavity, said damping posts being fixed to said partitions and connected to said upper housing; said damping post comprises a post with an elongated through hole in the middle of said post to form an elastic arm with a damping effect.
[0011] Preferably, said metal housing is provided with a protective tube on the outside, said protective tube comprising a first protective tube supported in an inverted V shape on an upper housing of said metal housing and a second protective tube protection supported in a V-shape on a lower housing of said metal housing; such that said metal housing is placed at a certain distance from the placement plane.
[0012] Preferably, the lower housing of said metal housing is provided with a plurality of bars in contact with said battery pack.
[0013] Preferably, said battery pack comprises a main control board and a plurality of output interfaces, wherein said main control board is electrically connected to said battery pack, and to said plurality of output interfaces.
[0014] Preferably, said first holding cavity is provided with a safety opening, said safety opening is provided with a safety cover, said safety cover is provided with a temperature sensing package under said safety cover, said temperature sensing package is provided with a pusher which pushes said safety cover to control the opening and closing of said safety cover in response to temperature changes, said temperature sensing package being provided on said battery pack. BRIEF DESCRIPTION OF THE FIGURES
[0015] [Fig. 1] is the diagram of the overall structure of the flame-retardant portable power supply of this utility certificate.
[0016] [Fig.2] is the diagram of the decomposition structure of the portable power supply fireproofed from this utility certificate.
[0017] [Fig.3] is a sectional view of the structure of the flame-retardant portable power supply of the present utility certificate.
[0018] [Fig.4] is the diagram of the partial internal structure of the portable power supply fireproofed from this utility certificate.
[0019] [Fig.5] is the diagram of the structure of the lower case of the portable power supply fireproofed from this utility certificate.
[0020] [Fig.6] is the diagram of the structure of the power supply damping post fireproof portable of this utility certificate.
[0021] [Fig.7] is another sectional view of the structure of the flame-retardant portable power supply of this utility certificate.
[0022] Reference figures: metal housing 1, upper housing 11, lower housing 12, bar 121, partition 13, first holding cavity 14, second holding cavity 15, damping post 16, elongated through hole 161, threaded hole 162, elastic arm 163, battery pack 2, electrical assembly 3, aerosol extinguishing device 4, interface assembly 5, protective tube 6, bracket 7, one-way valve 8, temperature sensing package 9. DETAILED DESCRIPTION OF THE EMBODIMENT METHOD Implementation method
[0023] Combined with those shown in Figures 1 to 7, the present embodiment provides a flame-retardant portable power supply comprising a battery pack 2 and an electrical assembly 3, further comprising a metal housing 1 and an aerosol extinguishing device 4, said metal housing 1 being formed with a holding cavity suitable for mounting the battery pack 2 and the electrical assembly 3, said battery pack 2 being separated from said electrical assembly 3; said battery pack 2 being electrically connected to said electrical assembly 3 and being in contact with said metal housing 1; said holding cavity being provided with an aerosol extinguishing device 4, said aerosol extinguishing device being configured to release an aerosol into said holding cavity when the temperature in said holding cavity reaches a specified value.
[0024] Continuing to combine with Figures 1 to 3, in this embodiment, said metal case 1 may have a square or other shape, which may be made of aluminum alloy, such as aeronautical aluminum, etc. On the one hand, the aluminum alloy is relatively light and less prone to corrosion, on the other hand, its better thermal conductivity allows better dissipation of heat from the battery pack 2 through the metal case 1.A partition 13 is provided in the holding cavity of said metal case 1, said partition 13 separating the internal space of said metal case 1 into a first holding cavity 14 and a second holding cavity 15 distributed in an upper and lower layer, wherein said first holding cavity 14 is used for mounting said battery pack 2, said battery pack 2 being fixed in the first holding cavity 14 by means of a bracket 7, the outer periphery of said partition 13 extending on both sides in opposite directions to form a peripheral wall of a first holding cavity and a second holding cavity, said peripheral wall allowing heat transfer from said first holding cavity and said second holding cavity to the outside air. Wherein said battery pack 2 can directly come into contact with said metal case 1.The lower case 12 of the metal case 1 in direct contact with said battery pack 2, transferring heat by contact with the metal case 1 and transferring the heat generated by the battery pack 2 to the metal case 1 by means of heat radiation and heat conduction, since the battery pack 2, in the case of normal heat generation, generates sufficient heat for conduction through the metal case 1, thereby realizing cooling and heat dissipation. In some embodiments, the lower case 12 of said metal case 1 is . provided with a plurality of bars 121, said bars 121 are in contact with said battery pack 2, and there are gaps between adjacent bars 121, this solution is implemented so that the heat is dispersed through the gaps between the bars 121, and not concentrated in one place, which makes the heat dissipation effect better.
[0025] Continuing to combine with Figures 1 to 5, said second holding cavity 15 is suitable for arranging electrical assemblies 3, which may include said electrical connections for connection to the battery pack 2, voltage and current conversion components and printed circuit boards, etc. for controlling the input and output of power. Here, the electrical connections to said battery pack 2 may pass directly through the partition 13 and are sealed between the power cable and the partition 13 so that the first holding cavity 14 and the second holding cavity 15 are separated from each other independently, preventing the heat in the first holding cavity 14 from being transferred directly into the second holding cavity 15 through the gap or through hole 161.
[0026] In some embodiments, a plurality of damping posts 16 suitable for mounting the upper housing 11 are provided in a row at said peripheral wall in said second holding cavity 15, said damping posts 16 being fixed to said partitions 13 and connected to said upper housing 11; said damping post 16 comprises a post with an elongated through hole 161 in the middle of said post to form an elastic arm 163 with a damping effect. Which is provided with an elongated through hole 161, so that the damping post 16 has a certain elastic deformation capacity and can absorb a certain impact force when the metal housing 1 directly hits the ground, thereby effectively protecting the stability of the internal parts.Here, said damping post 16 is also provided with a threaded hole 162 at the top, said threaded hole 162 is connected to said elongated through hole 161, said threaded hole 162 is used to connect to the upper housing 11 by means of a bolt or screw, and the bolt or screw can penetrate into said through hole 161, which can reduce the resistance during thread locking. On the side of said second housing 15 is also provided an interface assembly 5, said interface assembly 5 comprising an input port and an output port, etc. as well as a switch and a voltage regulator. Said interface assembly 5 is provided with a gasket on said metal housing 1 to prevent water from penetrating through the interface.
[0027] The aerosol extinguishing device 4 is provided in the first holding cavity 14, where the aerosol extinguishing device 4 may be provided under the partition 13, which may detect the temperature in the first holding cavity 14 and when the temperature reaches a certain value, the aerosol extinguishing device 4 bursts, so that the aerosol is dispersed into the first holding cavity 14 to extinguish and cool the battery pack 2. The fire extinguishing principle of the aerosol extinguishing device 4 is the thermal decomposition of the cooling effect of fire extinguishing, the gas-phase chemical inhibition and the solid-phase chemical inhibition of multiple fire extinguishing mechanisms, the interaction, the synergistic play. The aerosol agent used in the utility certificate includes strontium nitrate, potassium nitrate, dicyandiamide and resin, where strontium nitrate and potassium nitrate are oxidizing agents, dicyandiamide is a reducing agent and resin is a binder, in the ratio of 55% strontium nitrate, 20% potassium nitrate, 15% dicyandiamide and 10% resin.
[0028] In some embodiments of this utility certificate, said aerosol extinguishing device 4 may be provided in a variety of embodiments. For example, in one embodiment, said aerosol extinguishing device 4 comprises a heat-sensitive wire and an aerosol storage device, said heat-sensitive wire being exposed within said first holding cavity 14 and configured to cause the aerosol to disperse within said aerosol storage device when a temperature is detected as reaching said specified value. More specifically, the aerosol may be set to disperse when the heat wire detects a temperature of 120°C.The working principle is that when the battery pack 2 in the first holding cavity 14 is on fire or the temperature reaches 120°C or higher, the fire extinguishing device ignites the heat wire when exposed to an open flame, thereby activating the aerosol generator in the fire extinguishing device, which decomposes the chemical refrigerant by the heat released by the oxidation-reduction reaction, expands in the aerosol storage device and supports the storage device to disperse the aerosol in said first holding cavity 14, thereby realizing the dispersion of the aerosol in said first holding cavity 14, so that the aerosol generator and the coolant jointly participate in extinguishing the fire. In this embodiment, said heat-sensitive wire is arranged in an S-shape in a fire-exposed location and is kept at a safe distance from live electrical equipment.The advantages of this solution are as follows: the aerosol extinguishing device 4 is small in size, stored at atmospheric pressure and does not require the installation of a pipeline network; it is quick in extinguishing fires and has no dead ends; it is non-toxic, non-corrosive and does not damage the ozone layer of the atmosphere.
[0029] In another embodiment, the total mass of aerosol generator contained in said aerosol extinguishing device and the volume of space in said first holding cavity meet: 0.001 g / L < A / B <0.1 g / L, where A is the total mass of aerosol generator and B is the volume of space in said first holding cavity. From the experimental data, it can be concluded that this ratio range allows for effective extinguishing as well as rapid extinguishing after a fire in the battery pack 2.
[0030] In another embodiment, said aerosol extinguishing device 4 comprises a temperature sensor, a controller and an aerosol storage device, wherein said controller is electrically connected to said temperature sensor and is configured to be able to control the release of aerosols stored in said aerosol storage device when the temperature detected by said temperature sensor is higher than said specified value.
[0031] Continuing to combine with Figures 1 to 3, in some embodiments, said metal housing 1 is provided with a protective tube 6 on the outside, comprising a first protective tube supported in an inverted V shape on the upper housing and a second protective tube supported in a V shape on the lower housing, so that said metal housing 1 is placed at a distance from the placement plane. The protective tube 6 comprises a first protective tube supported by the upper housing in an inverted V shape and a second protective tube supported by the lower housing in a V shape, so that the metal housing 1 is placed at a distance from the placement plane. More precisely, it has the shape of an inverted V on the upper housing 11 and a V on the lower housing 12, which is formed by splicing several hollow tubes, which are finally screwed to the support 7, which is fixed to the metal housing 1.The protective tube 6 is provided in such a way that it is not just a V. The protective tube 6 allows the power supply to be placed at a certain distance from the lowest surface of the power supply, regardless of which side faces downwards, which on the one hand improves the industrial sealing effect, on the other hand further improves the impact resistance and facilitates the stacking of multiple power supplies.
[0032] Combined with those shown in [Fig.7], in some preferred embodiments, in order to prevent the supply from exploding when the aerosol disperses with too high air pressure in said first holding cavity 14, a safety door 8 is provided in the housing of said first holding cavity 14 of said metal housing 1. Said safety door 8 may be provided with a one-way valve, such as a one-way air valve, which opens to release pressure when the pressure reaches a certain value, and when the pressure is lower, it opens to release pressure. The pressure is automatically maintained. Said safety door 8 may automatically open to release pressure when the air pressure in the first holding cavity 14 is too high. The safety door 8 effectively solves the problem of excessive internal air pressure without affect the sealing effect. In other examples, said safety door 8 can also be opened mechanically, with a safety cover on said safety door 8, said safety cover can be moved in the first and second position of the safety door, when in the first position, said safety door 8 is closed, when in the second position then the safety door 8 is opened to release the pressure; specifically, can also be provided in the bottom of said safety cover the temperature sensing package 9, which is provided on the battery pack, said temperature sensing package 9 is capable of changing length in response to temperature changes, when the temperature in said first holding cavity 14 rises to a certain value, the push rod of the temperature sensing package 9 lengthens,pushing said safety cover from the first position to the second position to open the safety door 8, and when the temperature in said first holding cavity 14 drops, the push rod of the temperature sensing package 9 retracts to its initial length and the safety cover returns to the first position, thereby closing the safety door 8. Said safety door, by means of which the opening and closing of the safety door 8 can also be automatically controlled. The temperature sensing package 9 described herein is part of the prior art, for example the inductive thermal block bearing the publication number CN100557541C, and is not described herein. ,
[0033] Thanks to this utility certificate solution, the device has at least the following advantages. 1. No fan is needed to dissipate heat, the volume is small, and the shell can be made into a fully enclosed shape with good dustproof effect. 2. The aerosol extinguishing device can effectively avoid the occurrence of safety accidents. 3. The overall structure of the power supply is easy to install.
[0034] It should be understood that: the above is only the preferred implementation of the utility certificate, the scope of the utility certificate is not limited to the aforementioned embodiments.
[0035] The above description of the drawings used in the embodiments shows only certain embodiments of the utility model and is not limiting. For any technician skilled in this technical field, other relevant drawings can be obtained based on these drawings without creative work.
Claims
Claims
1. A flame-retardant portable power supply comprising a battery pack (2) and an electrical assembly (3); characterized in that it further comprises a metal housing (1) and an aerosol extinguishing device (4), said metal housing (1) being formed with a holding cavity suitable for mounting the battery pack (2) and the electrical assembly (3), said battery pack (2) being separated from said electrical assembly (3); said battery pack (2) being electrically connected to said electrical assembly (3) and being in contact with said metal housing (1); said holding cavity being provided with the aerosol extinguishing device (4), said aerosol extinguishing device (4) being configured to release an aerosol into said holding cavity when the temperature in said holding cavity reaches a specified value.
2. A flame-retardant portable power supply according to claim 1, characterized in that said metal case (1) is formed of a first holding cavity (14) and a second holding cavity (15); said battery pack (2) is provided in said first holding cavity (14) and is connected in contact with said metal case (1), said electrical assembly (3) is installed in said second holding cavity (15); said aerosol extinguishing device (4) is provided inside said first holding cavity (14), and is configured to release an aerosol into said holding cavity when the temperature in said holding cavity reaches a specified value.
3. A flame-retardant portable power supply according to claim 2, characterized in that said metal housing (1) comprises a partition (13), the outer periphery of said partition (13) extending on both sides in opposite directions to form a peripheral wall of the first holding cavity (14) and the second holding cavity (15), said peripheral wall allowing heat transfer from said first holding cavity (14) and said second holding cavity (15) to the outside air, in order to reduce the temperature caused by the heat generated by the battery assemblies or the electrical assemblies.
4. A flame-retardant portable power supply according to claim 3, characterized in that a plurality of damping posts (16) adapted for mounting an upper housing (11) are provided in a row at said peripheral wall in said second holding cavity (15), said posts damping posts (16) being fixed to said partitions (13) and connected to said upper housing (11); said damping post (16) comprises a post with an elongated through hole (161) in the middle of said post to form an elastic arm (163) with a damping effect.
5. A flame-retardant portable power supply according to claim 1, characterized in that said metal case (1) is provided with a protective tube (6) on the outside, said protective tube (6) comprising a first protective tube supported in an inverted V-shape on an upper case (11) of said metal case (1) and a second protective tube supported in a V-shape on a lower case (12) of said metal case (1); so that said metal case (1) is placed at a certain distance from the placement plane.
6. A flame-retardant portable power supply according to claim 5, characterized in that the lower housing (12) of said metal housing (1) is provided with a plurality of bars (121) in contact with said battery pack (2).
7. A flame-retardant portable power supply according to claim 1, characterized in that said battery pack (2) comprises a main control board and a plurality of output interfaces, wherein said main control board is electrically connected to said battery pack (2), and to said plurality of output interfaces.
8. A flame-retardant portable power supply according to claim 2, characterized in that said first holding cavity (14) is provided with a safety opening, said safety opening is provided with a safety cover, said safety cover is provided with a temperature sensing package (9) under said safety cover, said temperature sensing package (9) is provided with a pusher which pushes said safety cover to control the opening and closing of said safety cover in response to temperature changes, said temperature sensing package (9) being provided on said battery pack (2).